It appears to be a hard drive problem.
cronus services went down Saturday evening June 11, 2011. The affected services included DNS, NIS, time and using EECS Windows Active Directory passwords for IRIS ldap authentication.
[2011-06-16 09:28:01 | Mark Kraitchman]
A work-around was put in place to
restore the using EECS Windows Active
Directory passwords for IRIS ldap authentication
service during the morning of
Monday June 13, 2011.
cronus was brought back up with a new clean operating system on replacement hard drives. DNS and time services resumed during the afternoon of Wednesday June 15, 2011.
NIS services resumed Thursday June 16, 2011.
Some system administration tasks remain to be performed on cronus.
The ldap directory servers and windows active directory servers dependence on DNS support from cronus for EECS Windows Active Directory password being used for IRIS ldap authentication has not been fully investigated and has not been properly configured to be more robust yet.
Resolved as of 2011-06-16 09:25:00